ChemInform Abstract: Bench‐Top Synthesis of Solid‐State Copper(I) Sulfides, KCu_7‐xS₄ (x = 0.0, 0.12, 0.34), via Nonaqueous Electrochemistry.

Abstract

Bench-Top Synthesis of Solid-State Copper(I) Sulfides, KCu 7−x S 4 (x = 0.0, 0.12, 0.34), via Nonaqueous Electrochemistry.-Single crystal XRD data for (III) are reported (x = 0.0, space group P4/n, Z = 4; x = 0.12, space group I4/m, Z = 2; x = 0.34, space group I4/m, Z = 2). The temp.-dependent resistivity shows a strong variation with x. Further calorimetry measurements lead to huge Cp anomalies at 292, 186/193, and 208 K corresponding well with the resistivity transitions for related x values. -(HWU, S.-J.; LI, H.; MACKAY, R.; KUO, Y.-K.; SKOVE, M. J.; MAHAPATRO, M.; BUCHER, C. K.; HALLADAY, J. P.; HAYES, M. W.; Chem. Mater. 10 (1998) 1, 6-9; Dep. Chem., Clemson Univ., Clemson, SC 29634, USA; EN)